Common name: red knobbed starfish

General information

The Red Knob Sea Star, Protoreaster lincki, is a striking marine invertebrate popular among reef aquarium enthusiasts. Its vibrant coloration and distinctive red knobs make it a visually appealing addition to the home aquarium. Native to the Indo-Pacific region, this sea star can grow to a considerable size, making it suitable for larger tanks.

Care

Caring for the Red Knob Sea Star requires a well-established aquarium with a stable environment. They need a sandy substrate for burrowing and ample live rock to scavenge for food. They are omnivorous and can be fed a varied diet of meaty foods and marine algae. It's important to note that they may harm small invertebrates or disturb the substrate, potentially affecting other tank inhabitants.

Reproduction

In the wild, Protoreaster lincki reproduces by releasing gametes into the water column, a process known as broadcast spawning. In the home aquarium, reproduction is rare, but hobbyists can encourage breeding by maintaining excellent water quality and providing a stress-free environment.

Symbiosis

While not known for any specific symbiotic relationships, the Red Knob Sea Star can contribute to the tank's ecosystem by consuming detritus and uneaten food, thus helping to maintain water quality.

Habitat

Protoreaster lincki is found in the warm, shallow waters of the Indo-Pacific, from the Red Sea to the Great Barrier Reef. They inhabit various reef environments, often seen on sandy bottoms or among coral rubble.